Well, she could try to find a way to return him to his normal form. Maybe she'll search for some ancient magic or consult with a powerful sorcerer in the feudal era.
Another possibility is that she'll form a really deep bond with the baby Sesshomaru. So deep that it changes the future relationship between them when he grows up. This could be a really interesting plot point, as it would rewrite the dynamics between Kagome and Sesshomaru in a whole new way.
Perhaps she'll end up having to protect the baby Sesshomaru from his enemies. Since he's in a vulnerable state, his foes might see this as an opportunity to get rid of him. Kagome, being the kind - hearted person she is, would surely put up a fight to keep him safe. This could lead to some intense battle scenes in the fanfiction.
One great fanfiction where Kagome finds a baby Sesshomaru could be 'Kagome's Unexpected Discovery'. In this fic, Kagome stumbles upon a baby Sesshomaru in a forest glade. The story then delves into how she decides to take care of him, despite their previous enmity. It's a heartwarming tale of an unlikely bond forming between the two.
I'm not sure of a specific titled fanfiction exactly like this, but there could be many on platforms like Archive of Our Own. You can search for tags like 'Sesshomaru', 'Baby Kagome', 'Found Family' to narrow down the results. It's likely that in such a fanfiction, there would be a lot of cultural clashes as Sesshomaru is from a very different world than Kagome, which could make for some interesting plot points.
Another scenario could be that Sesshomaru gradually realizes that kidnapping Kagome to mate was a wrong move. As he spends time with her, he sees her kindness and intelligence, and he starts to develop a different kind of respect for her, rather than just seeing her as a potential mate. So he might let her go in the end.
Well, it could be a heartwarming story where Sesshomaru takes on the unexpected role of a protector for the baby Kagome.
Well, he could try to find the baby's family. Maybe he'll start by asking around in his town, using his detective skills. He might also get some help from his friends, like Scott. They could use their knowledge of the supernatural world to figure out if the baby has any special powers or if it's in danger from other supernatural beings.
The baby could turn out to have some sort of special chakra. Naruto, being curious and always wanting to help, tries to find out more about it. He might seek help from Kakashi or other experienced ninjas.
Perhaps Hinata will be really confused at first. She could ask her friends for help, like Naruto. Together, they would try to figure out where the baby came from and what to do with it. Since Hinata is kind - hearted, she'll surely do her best to keep the baby safe and comfortable.
Well, the story could involve Sesshomaru struggling to adapt to raising a baby, facing challenges and learning new skills along the way. There might also be moments of tenderness and growth for both of them as they form a special bond.
The baby could be a half - demon, related to some other important character in the series. Maybe it's the offspring of a character Sesshomaru has some history with.
A common plot is the development of an unlikely bond. Sesshomaru, who is usually cold - hearted, gradually warms up to baby Kagome. Another plot point could be Sesshomaru protecting Kagome from various threats, like other demons or even humans who might see her as an oddity. For example, he might have to fight off a group of demons who sense her spiritual power even as a baby.